Fuel-heating attachment



W. D BELL.

FUEL HEATING ATTACHMENT.

.APPLICATION FILED AUG.7| 1919.

1,366,157, Patented Jan. 18, 1921.

W'lfLllvIflJllf D. BELL, h Utlltm'ltllhllfl, fllill d.

insular,

specification of Letters Lltatcnt.

rateuteu was, is, real,

application filed august l, with. serial lilo. ttlhtiltl.

and directing the heat thus received into intimate relation with the fuel charge passing through the intake structure of said engine, whereby a complete vaporization of the charge will be produced before combustion and greater efficiency in engine opera tion obtained.

Another object of the invention resides inthe provision of a plate member designed for application between the side of an entill " gine and the intake and exhaust manifolds thereof, said member having appropriately situated ports formed therein through which the products for and of combustion are circulated when passing into and from the manifolds, the construction and location of the plate mpmber being such as to enable the same to be directly heated by the exhaust gases and also through the heat of the engine proper in order that said member will attain a working temperature best calculated to produce effective results, said member further being formed from a heat con ducting alloy whereby the wall of the port formed therein, through which thefuel charge is passed after leaving the intake manifold, will be heated to such extent as to lit effect a complete vaporization of the fuel charge and such condensed fuel which may form a part thereof, so that a highly combustible mixture will be produced and one wherein waste-in fuel consumption is eliminated. I

For a further understanding of the invention reference is to be had to the following description and to the accompanying drawing wherein Figure l is'auside elevation of an internal combustion engine and illustrating the application of the fuel heating attachments comprising the present invention thereto,

Fig. 2 is a detached perspective view of one of the heating plates,

l ig. 3 is a horizontal sectional view, and

fig. 4 is a transverse vertical sectional view,

lleferring more particularly to the details of the invention, use is made of an internal combustion engine 1, wherein is embodied the usual intake manifold 2 and the superimposed exhaust manifold 3. 'lhe rest of the engine may be of any desired construction, as the same has no particular bearing upon the'present invention, the latter dealing specifically with an explosive engine broadly and its associated manifolds.

in view of the present commercially used grade of gasolene, motor vehicleengineers have found it necessary to apply heat to the intake manifold for the purpose of preheat ing a fuel charge so as to insure a complete vaporizationof the latter. Many priordevices along this line have simply resorted to the expedient of providing a heating chamher around the intake manifold, which had the effect of promoting vaporization. However, it has been my experience that the majority of these devices fail to produce the state of vaporization best adapted for engine efficiency. lit is the purpose of my structure to provide means whereby heat from the products of combustion 'of an englue is transmitted to a port or duct through which the fuel charge is passed before the same enters the combustion chambers of the engine. By thus heating the wall or walls of said port any condensed fuel'which may exist in the charge will be brought into contact with the heated walls of the port so that relatively complete vaporlzation of such nonvolatilized fuel will be afforded.

To this-end, the present invention provides a plurality of plate members 42 of identical construction which, when in operation, are designed to be placed between the engine extremities of the exhaust and intake manifold and the side of the engine itself. These plate members are preferably formed from a heat conducting material such as aluminum or an alloy thereof, and in this instance said members are provided with ports 5 at the ends thereof. The outer ends of the latter are preferably countersunk as at '6 and thus provide sockets for the reception of the engine branches of the exhaust manifold 3. Through the provision till too

. mitted to the walls of the ports 8. 4O

manner that the wallsof said branches will be in alineinent with the inner walls of the ports so that an unrestricted circulation of the exhaust gases from the engine. through the ports 5 and the branches of the exhaust manifold 3 will be provided. It will thus be manifest that the inner walls of the ports 5 are directly exposed to the heat of the exhausted gases, so that the bodies of the plate members are thus capable of being heated to a required degree. The heating of the plate members is also facilitated by placing the same in direct contact with the cylinder head 7 of the engine, and owing to the material employed in the members. the heat conducted by the latter will be considerably high.

In order to take advantage of this heat. and to produce a more economically run ning engine, said members are provided centrally with intake ports 8. These ports are situated intermediately of the exhaust ports 5 and also have their outer ends countersunk as at 9 to receive the engine extremities of the intake manifold 2. The members 4 are also provided with bosses 10. which are located axially with respect to the ports 8 and protrude from the inner face of the plate members in such manner as to elongate the length of the inner portions 11 of the ports 8, so that heatin surfaces of extended length will be provided by the walls of said inlet ports 8. By virtue of this construction it will be observed that the heat of the exhausting gases is directly received by the plate members 4 and this heat is then trans- Thus. before a fuel charge is introduced into the cylinders of the engine, said charge will be brought into direct contact with the walls of .the ports 8 so that any condensation which may exist in the fuel charge will be readily vaporized by contact with the heated walls of the plate members. Also, the fuel charge as a whole is more completely vaporized. owing to the fact that its temperature is raised. and suspended particles of uncarbureted fuel entrained in the fuel mixture are also vaporized. Thus mechanism has been provided for efl'ecting a relatively complete vaporization of the fuel before its introduction into the engine cylinders. so that economy will obtain from a standpoint of fuel consumption and the general efficiency of the engine raised. Obviously, through the instrumentality of the plate members the gas conduits of the engine are so linked that a rapid and effective interchange of heat exists.

To secure the plate members in position,

the same are provided with elongated slots 12 through which are passed the bolt shanks of the connecting brackets 13. the latter be- :ng of the ordinary type and are so arranged is to bridge adjacent branches of the engine extremities of the intake and exhaust manifolds. in other words the brackets or clamps L3 serve in their ordinary capacity of retain- :ng the manifolds in position and in addi- Z1011 serve to securely retain the plate memiers & in their operative positions. The slots 12 are provided to accommodate the plate members to unevenly position pairs of securing clamps. The inner ends of the ex- .iaust ports 5 may be also provided with aosses let which correspond to the bosses 10 out ordinarily are not of the same length as the latter. however. all of said bosses are arranged to enter within receiving openings formed in the cylinder head 7, and said aosses are provided with surrounding gas- ;ets 15. by means of which leakage in gas :irculation will be eliminated when the -iamps l3 are properly applied.

In view of the foregoing description, taken in connection with the accompanying draw- ;ng, it will be apparent that there is pro- *ided an attachment of considerable utility .n the capacity named. and one which will oe convenient to apply, effective in use and or an automatic nature. since the same does not involve any manual attention in opera- :ion. inner portions 11 of the ports 8, substantially all condensation in the fuel charge viil be eliminated and a thorough vaporiza- 31011 of the fuel charge as a whole will be obiained. The invention. therefore, provides 1 structure in the nature of the plates 4 'VlllCll will operate by giving up the heat supplied to them. to vaporize the fuel passng therethrough and in finally delivering this highly combustible mixture directly to he cvlinders. without the possibility of overieating the charge.

' hat I claim is:

In an internal combustion engine the :ombination with the intake and exhaust manifolds thereof. of a plate member formed from a neat conducting material interposed aetween said manifolds and the side of said engine. and said plate member having a plurality of ports formed therein situated to establish communication between the inte- T101 of said engine and said manifolds, cer- 33.111 of the ports of said member having their walls directly exposed to the heat of the exhaust gases passing from said engine .0 said exhaust manifold to receive the heat 0f said gases.

In an internal combustion engine, the ombination with the intake and exhaust manifolds thereof. of a fuel heating mem- 381 formed from a heat conducting material ;nterposed between said manifolds and the side of said engine, said member being formed with a plurality of ports situated to BEISBQI' with the iluid assageways formed Owing to the extended length of the me ia? combination with the intake and exhaust.

manifolds thereof, said manifolds having their engine branches terminated in substantially horizontal alinement, of a fuel heating member formed from. a heat conducting material interposed between said manifolds and the side of said engine, said member being formed with a plurality of ports situated to register with the fluid passageways formed in said manifolds and engine, and means for retaining said member in its ap plied position,

a, in an internal combustion engine, the combination with the intake and exhaust manifolds thereof, of a plate member formed from heat conducting material interposed between said manifolds and the side of said engine, said members being formed with a plurality of ports situated. to register with the fluid passageways formed in said mani folds and engine, and securing clamps cone men to both the manifolds and said member,

5.. .4; fuel vaporizing attachment for internal combustion engines comprising a plate formed from a heat conducting material,

means for fastening said plate between the manifolds and side of an internal combustion engine, said plate having a plurality of ports formed therein adjacent to its extremities for registration with the passages of the exhaust manifold, and said plate being further formed with an intermediate port arranged for registration with the outlet passages of the intake manifold.

6. A fuel vaporizing attachment for internal combustion engines comprising a plate formed from a heat conducting material, said plate having ports formed therein adjacent to its extremities and said ports being designed for cooperation with the exhaust manifold of an engine, said plate being further formed with a port disposed intermediately of said former ports and said intermediate port being situated for connection with the intake manifold of said engine, and said intermediate port being of greater thickness than the corresponding thickness of said plate by providing an axial extension upon the rear face of said plate.

in testimony whereof I aliiiz my si nature,

Wlillilhllltlld D, B LL, 

